Fans waiting for this year's Christmas episode of Doctor Who will have less of a wait than anticipated - A two-minute teaser for the show will be broadcast more than a month earlier than expected, as part of the BBC's annual November charity event, Children In Need. And then, undoubtedly, will appear on the internet seconds later. Mild spoilers ahead.The two-minute clip will not only feature David Tennant, but also the first official appearance of guest star David Morrissey as the "other" Doctor that gives the special episode its title: "The Next Doctor." A red herring or hint of things to come? Our money's on the former. While the BBC have yet to confirm that the Christmas episode will continue the tradition of a Christmas Day transmission date, the Children In Need teaser has been scheduled for broadcast on Friday, November 14th. Doctor Who festive teaser planned [BBC]